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[JamesV6CDX]

So far have also ordered:

Timing belt kit
Thermostat
Aux belt
Aux idler pulley
Red coolant
New cat back exhaust and mounting kit

Unless anyone can convince me otherwise, given the good compression, I am thinking I will leave the heads in situ, especially as this car will have multi layer gaskets fitted?

I think I will also leave the water pump be. It's s gen GM item and feels absolutely fine, like new

[JamesV6CDX]

The new cooler has arrived. Gm branded

No cover plate or o rings though. I guess no harm in using old plate.

It does seem to have a tiny ding as per top left of this picture. I don't suppose this would cause any issue?

[JamesV6CDX]

To clarify I'm talking about along the vertical seam on the left of the picture

[JamesV6CDX]

On a brighter note the mats have come up lovely in the washing machine, 3 hour 90 deg cycle, much to SWMBO's disgust

Here is one of them after a wash. It was as bad as the other

[joff]

The new cooler has arrived. Gm branded

No cover plate or o rings though. I guess no harm in using old plate.

It does seem to have a tiny ding as per top left of this picture. I don't suppose this would cause any issue?

I still have the oil cooler you sold me last year, still in the box

[Diamond Black Geezer]

Where'd you get the oil cooler from?? Do they have any more?? 

Look after your coolant, the oil cooler will not fail

Thanks  Probably worrying about nothing, then. I'm currently on a 50-50 mix, so fingers crossed! I'm thinking of the previous years of neglect from a certain un-named male parent of mine... 

[JamesV6CDX]

The new cooler has arrived. Gm branded

No cover plate or o rings though. I guess no harm in using old plate.

It does seem to have a tiny ding as per top left of this picture. I don't suppose this would cause any issue?

Any more thoughts on this before I fit it

[Diamond Black Geezer]

Sorry I can't speak from personal experience on this, James, but it looks fine to me. Unless they've got another they are willing to swap it for just on the offchance. It's clearly had a little 'belt' but the insides are reasonably robust, aren't they? not quite as delicate as a cat or a radiator? 

[05omegav6]

If you're not sure, either pressure test it or don't use it...

[JamesV6CDX]

I don't have the means to pressure test it and the cost of having it done would be prohibitive

My gut feeling is that it's fine and only superficial, I was just after views of others

I guess I could cut the old one open just to see

[Kevin Wood]

I reckon you could drill a hole in one of those plastic plugs, fit a schraeder valve, pressurise it and drop it in a bucket of water. Would save a lot of wasted time if it is knackered.

[Bigron]

The dent doesn't look THAT bad, but what is the discolouration - corrosion?
Could the damage have caused plating separation, allowing degradation to take place, or am I talking through my a**e?!!

Ron.

[JamesV6CDX]

I reckon you could drill a hole in one of those plastic plugs, fit a schraeder valve, pressurise it and drop it in a bucket of water. Would save a lot of wasted time if it is knackered.

What sort of pressure would you suggest?

[Nick W]

I don't have the means to pressure test it and the cost of having it done would be prohibitive

My gut feeling is that it's fine and only superficial, I was just after views of others

I guess I could cut the old one open just to see

You could easily make a pressure tester from a pair of the pipes that connect to the cooler.
Crimp and solder one end up, and solder a tyre valve in the other. Pressurise with a footpump. Your Haynes manual probably gives some idea of how much pressure the oil system makes.

[Kevin Wood]

Yep, 2 or 3 BAR would be enough but I doubt you'd need that much to see a stream of bubbles if it's punctured.